Can I use and iphone 4s as an ipod without contract?

So my plan is ending in February for t-mobile so i'm going to switch over to at&t and get an iphone 4s but thats still 7 months away and i really need a new ipod (i'm stuck with a first gen with a broken home button). Could i just get an iphone 4s now and use it as an ipod touch with all of its functions besides calling and texting? It would save me money bc i wont have to buy an ipod.

Yes darling, you can use it as an iPod.

Yes, you will just not have service nor data plans.